Automatic tapping machine



April as, 1926, 1,511,022

J. R. SAYLOR AUTOMATIC TAPPING MACHINE original Filed June 29. 1923 3 Sheets-5heet 1 April 13, 1926. 1.581 022 J. R. SAYLOR AUTOMATIC TAPPING MACHINE Original Filed ne 29. 1923 s SheetsSheet 2 April-1 3 1926; v 1,581,022

J. R. SAYLQR AUTOMATIC TAPPING MACHINE Original Filed June 29, 1923 3 She r,s--Sheetv 3 Patented Apr. 13, 1926.

UNITED STATES JOHN R. SAYLOR, OI POTTSTOWN, PENNSYLVANIA.

IPATENTLO'F A'UjTOMATIC TAPPING MACHINE.

originarapplication filed June 29, 1923, Serial No.

1924. Serial No. 720,086.

sion of application filed June 29, 1923, under Serial No. 648,526), of which the following is a specification.

My invention relates to-feeding means,

having particular relation to such means as are applicable to automatic tapping machines. 1 One object of my invention is to rovide a magazine, the discharge outlet 0 -which is provided with means for centering the article to be removed therefrom.

Another object of my invention is to provide a magazine comprising vertically upright members adapted to contain a series of articles, the magazine having a discharge outlet including a. pair of depending spaced guideways. terminating in base portions, and a reciprocally mounted chuck having relatively movable jaws, the path of travel of 25 which lies intermediate said spaced guidew'ays, whereby an article may be removed therefrom. a

A further object of my invention is to provide a magazine with discharge apparatus, wherein so-called L-fittings may be maintained in a desired position to be embraced by the jaws of a movable chuck.

' With these and other objects a'nd'applications in mind, my invention further consists in the details of construction and operation and arrangement, hereinafter set forth and claimed and illustrated'in the accompanying drawings, wherein- Fig. 1 is an enlarged, detail, side-elevational view of the magazine, showing the movable chuck inthe tapping position, and

' the means for insuring the release of the finished article after the chuck jaws have moved from beneath the cutting tool, the end portion of the movable chuck constituting a resilient mounting for one end portion of thetoggle joint being broken away;

Fig. 2 is a view similar to Fig. 1 but showing t j e opening is 'ositioned intermediate the-relativelyimova le jaws of the chuck;-

Fig. 3 is an enlarged, detail, transversese t n ew at the mag z ne and the move position, wherein the magazine-discharge able chuck, the sectional plane being taken onthe line 3-3 of Fig. 2.

\ Figs. 4 and 5 are enlarged, detached perspective views illustrating the construction FICE.

648,526. Divided and this application filed .Tune 14,

v of the magazine discharge apparatus;

Fig. 6 is a sectional detail view of the magazine discharge apparatusslightly moditied to receive L-fittings rather than T-fittin s, as in the previous figures; and

i .7isatop ofF1iz8.

In theillustrated form of embodiment of my invention shown in the drawings, a bracket92 is provided with an' undercut rib 93, Fig. 1, wh1ch serves as a slidable mountplan view of the structure mg for a movable chuck 94. The movable chuck 94 comprises a stationary jaw 95 and a resilient abutment 96 spaced therefrom, Inasmuch as the details of the resilient abutment 96 have been previously described in 'my Patent No. 1,089,273, dated March 3,

1914, a detailed description is deemed unnecessary. A cooperating movable jaw 97 may be slida'oly mounted for longitudinal motion on ways 98 formed on the top side of themovable chuck 94. A bell-crank 1ever 99 is pivotally mounted on the movable aw. 97 and it has one end thereof connected y a link 101 with the resilient abutment 96.

The movable jaw 97 may be provided with an extension 102 for reasons as Willv appear hereinafter.

A slotted arm 103, Figs; 3 and 4, engages a pin 104, which is'carried by the remaining arm of the bell-crank lever 99, whereby the ugs 105 and 106, which are mounted on the movable chuck 94, cooperate with a pin 107,

which is carried by the bracket member 92. The lug 106 serves to limit the forward movement of the movable chuck 94 to a point I where such work as may be contained between the jaws 95 anda97 is in alignment with, say the taps (not shown)- of an automatic tapping machine. The lug 105 and pin 107 serve to limit the reverse movement movable chuck in the work-receiving of the chuck 94 to a point where'thejaws 95 and 97 are in ali ent with the discharge opening of a wor h magazine 108, as shown 3 which in gne to y recesses prises a tudinally-extending plurality of vertically-extending guide strips 109, which are mounted on a plate 111 supported by side plates 112 and 113 rigidly secured to opposite sides of the bracket 92. Thesupporting plate 111 is provided with a central opening 114 through which the T-fittings are adapted to pass into a discharge structure 115, which is ositioned in'the path of'travel of the mova le clutch 94, whereby the movable jaws 95 and 97 may embrace and remove a fitting therefrom. l i 1 The discharge structure '115, of which Fi s. 4 and 5 are detail perspective views and Fig.3 is a side elevational view of the completed structure, comprises a pair of spaced extensions 116* and 117 of thestrips 109 and base members'118 and 119, respec; tively, the extensions 116 and 117 constitut-' ing guideways for the fittings as they leave the magazine 108 and move into the chuckengag ing position shown in Fig. '2. The base members members having hori- 'zontal and vertical sides 121 and 122, respectively, the latter being rigidly positioned in 123 in the extensions 116- and 117 and constituting continnations of the guideways formed by said extensions. The horizontally-extending sides 121 are provided with spaced perforations 124 adapted to re ceive removably centering pins 125 which are carried by plate members 126. The plate members 126 are held in position to cause-the several 'centerin pins'to extend up through the correspon ing perforations by means of strips 127 having base portions 128 secured to plate members 126 and vertically extending portions 129 secured by springs 130 to the extensions 116 and 117. I,

The constructionshown in Figs. 8 and 9 has been modified, to provide for the center- T-fittings as ing of L -fittings rather than over that just described and differentiates l of Fig. 5 in the provision of a shoe 131. f0?

' in' the surface thereof.

guiding the L-fittings as they pass from the magazine opening 114 into aidischarge structure 132. The modification in the discharge structure 132 comprises ,the' shortening of one of the extensions, say' 116, and the mounting of a perforated'lplate 133 directly T c centering pins 125 may be resiliently held in the perforations of the plate 133'by'the. force of"the' springs '130.

The construction herein employed is otherwisejhe same as that just described'in connection with the discussion of Figs. 4 and 5.

recautions, wother-ethan those e resiliently mounted centering be observed to center properthejaws 95 and 97 are about by providing said jaws Further receive and to discharge T-fittings, com- 118 and 119 comprise longi-.

. gages the with outwardly extending centering springs 134, as shown for instance in Fig. 2,'where the springs-134' are extended, or in Fig. 1, where the springs 134 are compressed.

Referring to the chuck-actuating mechanism shown more particularly in Figs. 1

and 2 of the drawing, the arm 103 is keyed to an actuating shaft 135 having a rocker arm 136 at the outer end thereof. The rocker arm 136 is operatively associated with a power source, the details of which form no part of the present invention. The other end of the rocking shaft 135 carries a crank 141 which is operatively associated by means of a link 142 with a locking pin 143. The latter is reciprocally mounted in a boring 144 in the bracket 92 and it is. adapted to be reciprocated by the link142 into and out of the path of a lug 145 mounted on the movable clutch 94'. V

The end of the link 1422, which engages the pin 143 is slotted, thereby the relative-movement of the ink 142 and the pin 143,-while aspring 146, which is contained in the boring 144 between the base thereof. and the pin 143, normally providing for forces'the latter into its outermost pbsition,

as shown in Fig. 1. One corner of thelug 145 is formed square, while the opposite cornertisv formed with a bevel surface 147, for reasons'as will appear more fully hereinafter. s p

The arrangement of the crank 141 and the link 142 is such as to, cause the pin 143 to engage the lug 145 to lock the chuck 94 when the jaws and 97 thereof have moved a distance sufficient to bring such finished work'as is contained therebetween out of alignment with the taps (riot'shown) Furthermotion of the rocker shaft 135 causes the arm 103'to move to break the toggle-joint formed by the bell-crank lever pin-143 out of engagement with the square corner of the .lug 145, permitting the chuck shaft 135, however, K

to continue in its movement. When the motion of-the chuck 94 is reversed, the bevel surfaee-147 of the In 145 subsequently enpin 143, so t t the latter is moved downwardly by reason of the slotted connection between the same and the link 142, permitting the chuck 94 to continue unrestricted in its movement to the workingposition of K Fig. 1. Attention isalso directedto the fact that'themovable jaw extension 102 serves to prevent articles from entering the discharge structure 115 only when the chuck 994 has moved' into "the work receiving position of Fig.2,

f" n operati on,.whenthe rocker arm 136 is actuated, the. 'slidable clutch 94 is moved from the work position, Fig. 1, until the lugengages the crank operated pin 143'.

. Further movement of the lever 'arm 103 a chute 193, Fig. 3, to a receptacle causes the toggle formed by the link 101 and the bell-crank lever 99 to break, moving the sliding jaw 97 an amount suflicicnt to release the finished work. l V hen the work has been released, it passes from the chuck 94: through not 135 pin 143 to be withdrawn shown). Further motion of the shaft. causes. the locking out of engagement with the lug 145 and the 135 causes the work or fitting to begrasped spaced members constituting forations, centering-pins mounted on position? firmly between the jaws of the chuck 94 and moved into the work position previously mentioned.

While I have shown a particular embodiinent of my invention, for the purpose of de scribing the same and illustrating its princi ples of construction and operation, it is ap-. parent that various changes and modifica-. tions may be made therein, without departingfrom the spirit and scope of myinvention. I desire, therefore, that only such limitations shall be imposed thereon, as are indicated in the appended claims or as are demanded by theprior art.

I claim: 3

l. A magazine having an outlet comprising guideways in predetermined spaced relation, said guidew'ays having portions constituting aseat for the article to be discharged, and resilient means for preventing the tiltingof said article on said seat.

2.- In combination, a magazine having an outletcomprising spaced guideways ter minating in spaced base portions consitutin a seat, said base portions being providedwith resiliently mounted centering members.

3. In combination, a magazine having an outlet comprising forwardly extending guideways, angle-members having corresponding sides secured to the end portions of said guideways, the remaining correspondingsidescom stituting base portions for said guideways, said base portions being provided with erupporting members and up throughs'aid perforations, resiliently securing said pins:

and means for in said latter 4. In combination, a magazine having dis charge apparatus comprising forwardly extending spaced members constituting guide- -wa'ys, angle members having corresponding sides secured to the end portions of said guideways in such manner as to. constitute continuations of said guideways,--the other positioned to extend sides forming spaced base portions for said spaced ideways, said base portions being provided with perforations, centering pins mounted on supporting members and positioned to extend up through said perforations, said supportingmembers being provided with projecting portions, and resilient means for securing said pins in said lastmentioned position.-

5. In combination, a magazine having discharge apparatus comprising forwardly extending spaced members constituting guideways, angle members having correspondin sides. secured to the end portions of sai guideways, the other sides constituting base portions 'for said guidcways, saidbase portions being provided with perforations, centering pins mounted on supporting members "and perforations, means for resiliently securing positioned to extend up through said.

said pins in said latter position, and a movable chuck having relatively movable jaws, .said base portions being so spaced as to permit the passage therebetween of said movable chu k.

6.111 a magazine, a discharge outlet comprising a pair of spaced guides, means constituting a seat for the article to be removed, and means extending from said seat so as to center resiliently said article.

A magazine comprising a pair ofmembers constituting a seatfor an article to be removed, and centering pins operatively associated with said seat so as to maintain said article in a' desired position thereon.

8. A magazine outlet comprising a pair of members adapted to permit the passage 7 therebetween'of a chuck, said members constituting a seat for an article to be removed, and centeringameans for said article extending from said seat. i 9. In a magazine, a pair of'spaced guiding members, of which one at least is formed to constitute a seat for an article to be removed, one of said members being provided witlra plurality of centering pins adapted to extend therefrom into operative relation with said article.

i 10. A magazine having a guiding member terminating'in a portlon adapted to con stitute a support for the article to be removed, and centering means for said article extending outwardly from said portion.

. '11. In a magazine, a guidi'ngmember hav- I ing an angularly disposed portion constitut vided with a portion constituting a support for an article to be removed, and a plurality of centering pins extending from said supprovided with an h n means guided by said member;

videdwith apertures, and a plurality 0 .re-

'ositioned siliently mounted centering pins.

rnm said in said apertures and extending flange. Y I

15. A magaz-ine'having a guiding member apertured, transversely extending-fiange',- nd a plurality of pinsresilien'tly mounted supporting 16. A magazine having an outlet includin a guiding member,- a memberhaving one 7 s-i e secured to saidguiding member, a transversely extending sidepositioned to constitute a suppbrting pointi'or the article to be comprising Im'eans for said pins.

removed and also: apertured, centering pins .in the apertures, and resillent'supporti'ng g'ehara'cter described 17.'Apparatus of the .a magazine outlet having a guiding member provided" with -a' portion constitutin aflseat for the article to ,be removed, an means extending from said seatv 'whereby the article may-be maintained in a member ing a resilientlymounted guided element.

18. A-ma azme comprising upri ht members adapte to contain a series-oi articles, said magazine having. a discharge outlet com rising a pair of depending spaced desired position thereon, said means includ terminating in base portions, the

gui eways I atter being provided with resiliently mounted centering pins.

19. In a magaz eluding a member constituting a guideway, a second member having one s1de portion so secured to said guideway as to constitute a' continuation thereof, the other sideconstituting a support for the article to be discharged, centerlng pins positioned to extend from said supporting slde, and supporting means for said vpins having a resilient mounting positioned to be guided by said first-mentiondmember.

20. A magazine having a guiding strip, a member having one side positioned to constitute a continuation of said strip ior said pins having a projecting pqrtion, and resilien't means operatively associated 'with saidlatter' portion whereb Y said pins may be resiliently positioned in said apertures.

" V JOHN RFSAYLOR.

ine, a discharge outlet and the other side apertured and constitutmg a seat 'for the article to be removed, a pair of pins, a member. constituting a support 

